64189423967 has 2 divisors, whose sum is σ = 64189423968. Its totient is φ = 64189423966.

The previous prime is 64189423913. The next prime is 64189424021. The reversal of 64189423967 is 76932498146.

It is a balanced prime because it is at equal distance from previous prime (64189423913) and next prime (64189424021).

It is a cyclic number.

It is not a de Polignac number, because 64189423967 - 2¹⁸ = 64189161823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64189423367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32094711983 + 32094711984.

It is an arithmetic number, because the mean of its divisors is an integer number (32094711984).

Almost surely, 2^64189423967 is an apocalyptic number.

64189423967 is a deficient number, since it is larger than the sum of its proper divisors (1).

64189423967 is an equidigital number, since it uses as much as digits as its factorization.

64189423967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 59.

The spelling of 64189423967 in words is "sixty-four billion, one hundred eighty-nine million, four hundred twenty-three thousand, nine hundred sixty-seven".